package com.missfresh.cooperation2meituan.util;

import java.security.MessageDigest;

public class MD5Util {
	
	public final static String MD5(String s) {
		char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8',
				'9', 'a', 'b', 'c', 'd', 'e', 'f' };
		try {
			byte[] btInput = s.getBytes();
			// 获得MD5摘要算法的 MessageDigest 对象
			MessageDigest mdInst = MessageDigest.getInstance("MD5");
			// 使用指定的字节更新摘要
			mdInst.update(btInput);
			// 获得密文
			byte[] md = mdInst.digest();
			// 把密文转换成十六进制的字符串形式
			int j = md.length;
			char str[] = new char[j * 2];
			int k = 0;
			for (int i = 0; i < j; i++) {
				byte byte0 = md[i];
				str[k++] = hexDigits[byte0 >>> 4 & 0xf];
				str[k++] = hexDigits[byte0 & 0xf];
			}
			return new String(str);
		} catch (Exception e) {
			return null;
		}
	}
	public static void main(String[] args) {
	System.out.println(MD5("http://waimaiopen.meituan.com/api/v1/poi/mget?app_id=1235123121&app_poi_code=31&timestamp=1389751221d31ba58fd73c71db697ab5e4946d52d"));
	System.out.println(MD5("mryxMRYX!QA"));
	}
}
